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3 years ago

Solve for the missing angle

Mathematics

1 answer:

Kobotan [32]3 years ago

7 0

The missing angle is also 111 since they’re opposite interior angles (and are equal).

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Ill mark most brilliant!<br><br><br> w(t) = -21° + 5; Find wl-2)

N76 [4]

Answer:

w= −16/t

Step-by-step explanation:

Let's solve for w.

wt = −21+5

Step 1: Divide both sides by t.

tw/t = −16/t

w= −16/t

4 0

3 years ago

Lots of 40 components each are deemed unacceptable if they contain 3 or more defectives. The procedure for sampling a lot is to

MrRissso [65]

Answer:

The probability of founding exactly one defective item in the sample is P=0.275.

The mean and variance of defective components in the sample are:

$\mu=0.375\\\\\sigma^2=0.347$

Step-by-step explanation:

In the case we have a lot with 3 defectives components, the proportion of defectives is:

$p=3/40=0.075$

a) The number of defectives components in the 5-components sample will follow a binomial distribution B(5,0.075).

The probability of having one defective in the sample is:

$P(k=5)=\binom{5}{1}p^1(1-p)^4=5*0.075*0.925^4=0.275$

b) The mean and variance of defective components in the sample is:

$\mu=np=5*0.075=0.375\\\\\sigma^2=npq=5*0.075*0.925=0.347$

The Chebyschev's inequality established:

$P(|X-\mu|\geq k\sigma)\leq \frac{1}{k^2}$

6 0

3 years ago

Two is equal to 4 less than 3 times a certain number. Find the number.

Allushta [10]

Answer:

Step-by-step explanation:

2=3x-4

6=3x

x=2

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3 years ago

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2 years ago

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